prepare for exposing APIs to injected scripts

2 files changed, 58 insertions, 1 deletions

diff --git a/content/content.js b/content/content.js
index ef2ee39..c492d53 100644
--- a/content/content.js
+++ b/content/content.js
@@ -42,6 +42,7 @@
  */
 
 #IMPORT content/repo_query_cacher.js
+#IMPORT content/haketilo_apis.js
 
 #FROM common/browser.js           IMPORT browser
 #FROM common/misc.js              IMPORT is_privileged_url
@@ -132,7 +133,14 @@ async function main() {
 	    resolve_page_info(Object.assign(page_info, script_response));
 	    return;
 	} else {
-	    for (const script_contents of script_response.files) {
+	    haketilo_apis.start();
+
+	    const version = browser.runtime.getManifest().version;
+	    const scripts = [
+		`window.haketilo_version = ${JSON.stringify(version)};`,
+		...script_response.files
+	    ];
+	    for (const script_contents of scripts) {
 		const html_ns = "http://www.w3.org/1999/xhtml";
 		const script = document.createElementNS(html_ns, "script");
 
diff --git a/content/haketilo_apis.js b/content/haketilo_apis.js
new file mode 100644
index 0000000..36e987d
--- /dev/null
+++ b/content/haketilo_apis.js
@@ -0,0 +1,49 @@
+/**
+ * This file is part of Haketilo.
+ *
+ * Function: Expose some special functionalities to injected scripts using
+ *           CustomEvent's to communicate with them.
+ *
+ * Copyright (C) 2022 Wojtek Kosior
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * As additional permission under GNU GPL version 3 section 7, you
+ * may distribute forms of that code without the copy of the GNU
+ * GPL normally required by section 4, provided you include this
+ * license notice and, in case of non-source distribution, a URL
+ * through which recipients can access the Corresponding Source.
+ * If you modify file(s) with this exception, you may extend this
+ * exception to your version of the file(s), but you are not
+ * obligated to do so. If you do not wish to do so, delete this
+ * exception statement from your version.
+ *
+ * As a special exception to the GPL, any HTML file which merely
+ * makes function calls to this code, and for that purpose
+ * includes it by reference shall be deemed a separate work for
+ * copyright law purposes. If you modify this code, you may extend
+ * this exception to your version of the code, but you are not
+ * obligated to do so. If you do not wish to do so, delete this
+ * exception statement from your version.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ * I, Wojtek Kosior, thereby promise not to sue for violation of this file's
+ * license. Although I request that you do not make use of this code in a
+ * proprietary program, I am not going to enforce this in court.
+ */
+
+#FROM common/browser.js IMPORT browser
+
+function start() {
+}
+#EXPORT start